Home / 143,380.20-215,072.28-54,638.52

Finding the Fourth Proportional to 143,380.20, 215,072.28 and 54,638.52

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Solution

The fourth proportional to 143,380.20, 215,072.28 and 54,638.52 is: 81,958.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,380.20 : 215,072.28 = 54,638.52 : x
  2. Step 2: Convert to fraction form
    143,380.20/215,072.28 = 54,638.52/x
  3. Step 3: Cross multiply
    143,380.20x = 215,072.28 × 54,638.52
  4. Step 4: Simplify right side
    143,380.20x = 11,751,231,072.23
  5. Step 5: Solve for x
    x = 11,751,231,072.23/143,380.20
  6. Step 6: Final answer
    x = 81,958.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.